Sikaflex Black 291-Lot Long Open Time

Sikaflex-291 is a non-sag 1-c polyurethane sealant specifically developed for the marine market, which cures on exposure to atmospheric moisture form a durable elastomer. Sikaflex-291 is a multipurpose product for use in marine construction. It is suitable for making elastic, vibration-resistant joint seals, and can also be used for a variety of interior and exterior sealing applications. Sikaflex-291 bonds extremely well to the materials commonly used in marine construction like wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics (GRP, etc.). Sikaflex-291 must not be used to seal plastics that are prone to stress cracking (e.g. Plexiglas, polycarbonate, etc.). Once cured, Sikaflex-291 can easily be sanded down as required.